Key Takeaways
- 73 % of organizations say they are prepared for web‑based attacks, yet 82 % actually suffered a browser‑based breach in the past year.
- Infostealers harvested roughly 1.8 million credentials and 68.8 billion cookies in 2025, enabling silent, credential‑style intrusions.
- Nearly all tested work applications (100 %) are browser‑accessible, with 78.8 % being browser‑only, making the browser a critical security boundary.
- Data loss prevention (DLP) coverage is modest at only 53 %; other controls show similarly uneven adoption.
- 98 % of IT professionals express concern about web‑based threats, 81 % anticipate greater sophistication, and 73 % expect more incidents ahead.
- Experts urge organizations to treat the browser as a frontline defense, strengthening DLP, granular controls, and continuous monitoring to counter low‑risk, high‑reward attacks that rely on stolen cookies and credentials.
Introduction and Methodology
NordLayer’s “Why Browser Security Can’t Wait: Web‑based Threat Report 2026” draws on three complementary data sources to paint a comprehensive picture of today’s browser‑centric threat landscape. Researchers evaluated 504 of the highest‑rated and most‑reviewed work applications, assessing how each interacts with browsers. They also analyzed large‑scale data dumps from known infostealer malware families to quantify stolen credentials and cookies. Finally, a survey of 405 U.S. cybersecurity and IT professionals captured organizational perceptions, confidence levels, and expectations regarding web‑based threats. This triangulation of technical analysis, threat intelligence, and practitioner insight provides a robust foundation for the report’s key findings and recommendations.
Confidence vs. Reality: The Preparedness Gap
A striking disconnect emerges between how prepared organizations feel and what actually transpires. While 73 % of respondents claim confidence in their ability to thwart web‑based attacks, 82 % acknowledge having experienced at least one browser‑based incident in the previous year. This gap suggests that many firms rely on a sense of security derived from generic defenses rather than evidence‑based validation of browser‑specific controls. The report warns that overconfidence can breed complacency, leaving critical attack vectors unaddressed and allowing adversaries to exploit perceived safety nets.
Scale of Credential and Cookie Harvesting
The sheer volume of data siphoned by infostealers underscores the lucrative nature of browser‑focused crime. In 2025 alone, malware harvested approximately 1.8 million unique login credentials and an astonishing 68.8 billion cookies. These artifacts enable attackers to replay sessions, bypass multi‑factor authentication, and move laterally within SaaS environments without triggering traditional alerts. Because a stolen cookie often looks like a legitimate login, the intrusion appears benign, granting attackers a low‑risk, high‑reward pathway into corporate networks.
The Browser as the Critical Attack Surface
Researchers emphasize that the browser has become the decisive boundary between internal resources and the open internet. Every one of the 504 evaluated applications is browser‑accessible, and 78.8 % operate exclusively within the browser window. As organizations shift to cloud‑native SaaS stacks, the browser increasingly mediates access to email, collaboration suites, CRM systems, and custom web portals. Consequently, compromising the browser grants attackers direct entry to the very applications that drive daily business, rendering traditional network‑centric defenses insufficient.
Uneven Security Coverage and Control Gaps
Despite heightened concern, the adoption of targeted safeguards remains patchy. Data loss prevention (DLP) tools—the technology most directly suited to blocking unauthorized data exfiltration via browsers—are deployed in only 53 % of surveyed organizations. Other controls, such as secure web gateways, browser isolation, and endpoint detection and response (EDR) tuned for web threats, show similarly uneven implementation. This fragmented coverage leaves many browsers only partially protected, enabling attackers to slip through gaps where generic firewalls or antivirus solutions lack the granularity to inspect or block malicious web traffic.
Concerns, Expectations, and Future Outlook
The survey reveals a pervasive sense of unease: 98 % of IT professionals report that their organizations are worried about web‑based threats. Looking ahead, 81 % anticipate that attacks will grow more sophisticated, and 73 % expect the frequency of incidents to rise. These expectations are grounded in the observed trend of attackers refining techniques to abuse stolen session cookies and credentials, leveraging the growing reliance on web‑based SaaS platforms. The report cautions that without proactive upgrades to browser‑specific defenses, the threat landscape will continue to outpace existing security postures.
Recommendations and Conclusion
To close the confidence‑reality gap, NordLayer urges organizations to treat the browser as a frontline security control rather than an afterthought. Key actions include:
- Deploying or expanding DLP solutions with deep browser inspection capabilities to detect and block unauthorized data transfers.
- Implementing browser isolation or remote browser technologies that separate user interaction from endpoint systems.
- Enforcing strict cookie management policies, such as short‑lived session tokens and same‑site attributes, to reduce the value of stolen cookies.
- Integrating continuous monitoring of authentication anomalies, leveraging behavioral analytics to spot credential‑style logins that deviate from normals.
- Regularly reviewing and updating inventory of browser‑accessible applications to ensure coverage aligns with actual usage.
By aligning security investments with the browser’s pivotal role in modern workstreams, businesses can transform a point of weakness into a fortified barrier. The report’s message is clear: confidence must be grounded in verified, browser‑centric defenses; otherwise, the illusion of readiness will continue to be shattered by the silent, cookie‑driven intrusions that now dominate the threat landscape.